• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • 35mm 861.6mm2
  • 42.4 megapixels
  • 35.00mm (35mm eq.)
  • Detailed specifications
  • Pentax K-S1
  • Sony Cyber-shot DSC-RX1R II
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Prices: Compare Prices Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Sony RX1
RX1 vs RX1R II
Successor:    
General
Model Number: K-S1 RX1R II
Alternate Model Number(s):    
Camera Format: SLR Mid-Sized
Currently Manufactured: No Yes
Retail Price: $799.95 $3299.99
Street Price: $501.65 $3,298.00
Date Available: 2014-09-15 2015-11-15
Tripod Mount: Yes Yes
Weight: 27.0 oz (765 g)
includes batteries, kit lens
17.9 oz (507 g)
includes batteries
Size: 4.8 x 3.7 x 2.8 in.
(121 x 93 x 70 mm)
4.5 x 2.6 x 2.8 in.
(113 x 65 x 72 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer:   Sony Exmor R (BSI)
Effective Megapixels: 20.1 42.4
Sensor Format: APS-C 35mm
Sensor size: 366.6mm2 (23.50mm x 15.60mm) 861.6mm2 (35.90mm x 24.00mm)
Approximate Pixel Pitch: 4.29 microns 4.51 microns
Focal Length Multiplier: 1.5x 1.0x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Optional Optional
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 78 97
DxO Color Depth Score (bits): 23.5 25.8
DxO Dynamic Range Score (evs): 13.0 13.9
DxO Maximum Effective ISO Score (iso): 1,061 3,204
Image Capture
Image Resolution: 5472 x 3648 (20.0 MP, 3:2),
4224 x 2816 (11.9 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2)
7952 x 5304 (42.2 MP, 3:2),
7072 x 5304 (37.5 MP, 4:3),
7952 x 4472 (35.6 MP, 16:9),
5296 x 5296 (28.0 MP, 1:1),
5168 x 3448 (17.8 MP, 3:2),
4592 x 3448 (15.8 MP, 4:3),
5168 x 2912 (15.0 MP, Other),
3440 x 3440 (11.8 MP, 1:1),
3984 x 2656 (10.6 MP, 3:2),
3536 x 2656 (9.4 MP, 4:3),
3984 x 2240 (8.9 MP, 16:9),
2656 x 2656 (7.1 MP, 1:1),
3872 x 2160 (8.4 MP, Other),
8192 x 1856 (15.2 MP, Other),
5536 x 2160 (12.0 MP, Other),
12416 x 1856 (23.0 MP, Other)
Image File Format: JPEG (EXIF 2.30), 12-bit RAW (.PEF, .DNG) JPEG (EXIF 2.3), 14-bit RAW (uncompressed and compressed ARW 2.3), RAW+JPEG
Continuous-mode frames/second: 5.4 5.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (30p/​25p/​24p)
1280x720 (60p/​50p)
1920x1080 (60p/​60i/​50p/​50i/​30p/​25p/​24p)
1280x720 (120p/​100/​30p/​25p)
Movie File Format: MPEG-4 AVC/H.264 (MOV) XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Composite Video Out: No
NTSC/PAL Switchable Video: n/a n/a
Video Usable as Viewfinder: n/a n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) n/a
Lens: smc Pentax-DA L 18-55mm f/3.5-5.6 AL Carl Zeiss Sonnar T* 2/35mm (fixed); 8 elements in 7 groups, 3 aspherical elements, 9 aperture blades
Focal Length (35mm equivalent): 27 - 83mm 35mm
Focal Length (actual): 18 - 55mm 35mm
Zoom Ratio: 3.06x 1.00x
Aperture Range: f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele) f/2 - f/22
Integrated ND Filter: No No
Normal Focus Range: 25 cm to Infinity
9.8 in to Infinity
30 cm to Infinity
11.8 in to Infinity
Macro Focus Range:   20 - 35 cm
7.9 - 13.8 in
Filter Thread: 52.0mm 49.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes
Digital Zoom Values:   Up to 2x Clear Image Zoom, Up to 4x standard digital zoom, 1.4x/2.0x Digital Teleconverter, up to 6.2x Smart digital zoom at lower resolutions
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: SAFOX IX i+, TTL phase-matching -11 point (9 cross type focus points in the center) Fast Hybrid AF (phase-detection/contrast-detection): Wide (399 points for PDAF, 25 points for CDAF), Center, Flexible Spot (S/M/L), Expand Flexible Spot, Lock-on AF (Wide / Center / Flexible Spot (S/M/L), Expand Flexible Spot)
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / LCD
Viewfinder Type: SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., 20.5mm eyepoint, -2.5 to +1.5 diopter 0.39-type, 2.36M-dot XGA OLED, 100% coverage, 0.74x magnification, 18.4mm eyepoint (CIPA), -4.0 to +3.0m-1 diopter
Focus Peaking: Yes Yes
EVF Resolution: n/a 2,359,296 dots
Viewfinder Magnification (35mm equivalent): 0.63x 0.74x
Viewfinder Magnification (nominal/claimed): 0.95x 0.74x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 921,600 dots (307,200 px) 1,228,800 dots (307,200 px)
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 51200 25600
Minimum ISO (native): 100 100
ISO Settings: Auto, 100-51200 (1, 1/2 or 1/3 EV steps) ISO 100-25600 (1/3 EV steps, expandable to 50-102400), Auto (100-25600 with selectable upper/lower limits); Multi Frame NR: 100-102400 (1 EV steps), Auto (100-102400 with selectable upper/lower limits)
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Multi Auto, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten Light, Flash, CTE, Manual, Color Temperature Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, Color Temp, Color Filter, Custom
Shutter Speed Range: 1/6000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 77 segment Multi, Center-weighted, Spot 1200-zone Evaluative, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Sensitivity Priority, Shutter & Aperture Priority (Tav); Scene: Portrait, Landscape, Macro, Moving Object, Night Scene Portrait, Sunset, Blue Sky, Forest, Night Scene, Night Scene HDR (JPEG only), Night Snap, Food, Pet, Kids, Surf & Snow, Backlight Silhouette, Candlelight, Stage Lighting, Museum; Effect: Faded Color, Clear Tone, Brilliant Color, Unicolor Bold, Vintage Color, Cross Processing, Warm Fade, Tone Expansion, Bold Monochrome, Infrared Filter, Vibrant Color Enhance; Digital filters (capture): Extract Color, Replace Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3 Scene modes: Portrait, Sports Action, Landscape, Sunset, Night Scene, Hand-held Twilight, Night Portrait, Anti Motion Blur; Panorama; Effects: Toy Camera, Pop Color, Posterisation, Retro Photo, Soft High-key, Partial Color, High Contrast Monochrome, Soft Focus, HDR Painting, Rich-tone Monochrome, Miniature, Watercolor, Illustration
Self Timer: 2 or 12 seconds 2, 5, 10; 3 or 5 shots after 2, 5, 10 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: Auto Flash Discharge, Auto Flash + Red-eye Reduction (Auto Picture, Scene) Flash On, Flash On+ Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, Manual Flash Discharge (Full-1/128) Auto, Fill-flash, Slow Sync, Rear Sync, Off, Wireless (with optional compliant flash)
Flash Guide Number (ISO 100): 10.0 m / 32.8 ft. n/a
Flash Range Description: Depends on lens n/a
Max Flash Sync: 1/180 1/2000
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Multi Interface Hot Shoe
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC / SDXC MS Duo / MS PRO Duo / SD / SDHC / SDXC
UHS Support: UHS-I UHS-I
Other Memory: UHS-I compliant  
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 14-bit RAW (uncompressed and compressed ARW 2.3), RAW+JPEG
Movie File Format: MPEG-4 AVC/H.264 (MOV) XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Included Memory: No memory included  
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No Yes
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed,WiFi
PictBridge Compliant: No No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR Threaded cable release, via USB or Wi-Fi
Connections (extended): Micro (Type D) HMDI Multi Micro USB, Micro HDMI (Type D), 3.5mm stereo microphone jack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.64
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.62
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 5.4 5.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 20 24
RAW shooting speed in burst mode (fps):   5.0
Buffer size for RAW shooting in burst mode (frames):   23
RAW+JPEG shooting speed in burst mode (fps):   5.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):   22
Shutter lag (full AF, wide/mid):   0.26 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.059 seconds
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused):   0.016 seconds
Shutter Lag (notes):    
Startup Time:   1.5 seconds
Play -> Record Time:   1.0 seconds
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   220 shots
Battery Life, Still (CIPA Rating OVF/EVF): 480 shots 200 shots
Battery Life, Video:   30 minutes
Battery Form Factor: Proprietary D-LI109 Proprietary NP-BX1
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI109 Lithium-ion rechargeable 1 x Proprietary NP-BX1 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: Yes
Software
Included Software: Digital Camera Utility 5 Software CD-ROM Free downloads of Image Data Converter (Win only), PlayMemories Home, Capture One Express (for Sony)
OS Compatibility:   Windows, Mac OS X
Miscellaneous
Notes & Features: The K-S1 comes in 3 standard colors: black, blue, and white. In addition, two separate color collections are available; The Fabric Collection, containing 4 unique colors such as cotton beige and tweed gray – and the Night Sky Collection, with 5 more elegant colors like Sunset Orange, Dawn Purple, and Midnight Black.